We have been customers of DHL for several years and have not had one bad experience. We highly recommend DHL Mechanical. Mark and his son transformed our mechanical room (avoiding near disaster because of how the builder installed our boiler) to an efficient, organized, highly functional space. Mark is always responsive and during the last cold snap responded quickly to replace the original air handler that failed and left our upstairs without heat. The new unit has made a great improvement for the overall heat distribution in the colder rooms.
